Fatigue crack growth behavior of silica particulate reinforced epoxy resin composite
Source abstract
Abstract
Abstract In the present work, fatigue crack growth tests of epoxy resin composite reinforced with silica particle under various R -ratios were carried out to investigate the effect of R -ratio on crack growth behavior and to discuss fatigue crack growth mechanism. Crack growth curves arranged by Δ K showed clear R -ratio dependence even under no crack closure, where the values of Δ K th were 0.82 and 0.33 MPa √m for R = 0.1 and 0.7 respectively. However, crack growth curves arranged by K max merged into almost one curve regardless of R -ratio, which indicated that crack growth behavior of the present composite was time-dependent. The value of K max, th were in the range from 0.78 to 1.12 MPa √m. In situ crack growth observation revealed the crack growth mechanism: micro-cracking near the interface between silica particle and resin matrix occurs ahead of a main crack and then micro-cracks coalesce with a main crack to grow. The crack path was in the epoxy matrix, which was consistent with the time-dependent crack growth.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Epoxy Resin Curing Processes · Structural Behavior of Reinforced Concrete
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
Show source-provided references
1. Fracture behaviors of epoxy nanocomposites with nano-silica at low and elevated temperatures10.1007/s10853-006-1420-x ↗
2. Effect of sub-micron silica fillers on the mechanical performances of epoxy-based composites10.1016/j.polymer.2007.01.053 ↗
3. Mechanical and fracture properties of epoxy/inorganic micro and nano-composites10.1023/A:1025719715808 ↗
4. The fracture of particulate-filled epoxide resins10.1007/BF00543827 ↗
5. Investigation of the thermal, mechanical, and fracture properties of alumina–epoxy composites10.1016/j.polymer.2007.12.014 ↗
6. Thermal and electrical conductivity of single and multi-walled carbon nanotube-epoxy composites10.1016/j.compscitech.2005.10.016 ↗
7. Nanoscale and effective mechanical behavior and fracture of silica nanocomposites10.1016/j.compscitech.2008.07.013 ↗
8. Crack propagation in a glass particle-filled epoxy resin part1 effect of particle volume fraction and size10.1007/BF02403234 ↗
9. The moisture effect on the fatigue crack growth of glass particle and fiber reinforced epoxies with strong and weak bonding conditions part 1 macroscopic fatigue crack propagation behavior10.1016/j.compscitech.2004.02.016 ↗
10. ASTM E647-08, A.1.5. Standard test method for measurement of fatigue crack growth rate. Annual book of ASTM standards 2008; 3.01; p. 683.
11. ASTM E647-08, A.5. Standard test method for measurement of fatigue crack growth rate. Annual book of ASTM standards 2008; 3.01; p. 692.
12. Measurement of fatigue crack propagation and crack closure at low stress intensity level by unloading elastic compliance method10.2472/jsms.25.899 ↗
13. Effect of stress ratio on fatigue crack growth in 95Pb–5Sn solder10.1115/1.1371780 ↗
14. Analysis of fatigue crack growth behavior in polymers using unified approach
15. A critical analysis of crack propagation laws10.1115/1.3656900 ↗
16. Broek · 1989
17. Fatigue crack growth in bonded DCB specimens10.1016/S0013-7944(03)00046-8 ↗
18. Handbook of Ceramics. Ceramic Society of Japan. 2nd ed. 2002. p. 488.
19. Time-dependent micromechanical behavior in graphite/epoxy composites under constant load: a combined experimental and theoretical study10.1016/S1359-6454(01)00353-6 ↗
20. Effect of stress ratio on fatigue crack growth of thermoset epoxy resin10.1016/j.polymdegradstab.2009.06.012 ↗
21. Fatigue behavior of joints bond with either filled, or filled and toughened, adhesive10.1016/0142-1123(94)90197-X ↗